1. Borgman, C., Sølvberg, I. and Kovács, L. (Eds) (2002), Proceedings of the Fourth DELOS Workshop, Evaluation of Digital Libraries: Testbeds, Measurements, and Metrics, Budapest, 6‐7 June 2002, available at: www.sztaki.hu/conferences/deval/presentations/DELOSWorkshop4OnEval_report.pdf (accessed 4 May 2006).
2. Foster, I. and Kesselman, C. (Eds) (2004), The Grid: Blueprint for a Future Computing Infrastructure, 2nd ed., Kaufmann, Amsterdam.
3. Foster, I., Kesselman, C. and Tuecke, S. (2001), “The anatomy of the grid: enabling scalable virtual organizations”, The International Journal of High Performance Computing Applications, Vol. 15 No. 3, pp. 200‐22.
4. Foster, I., Frey, J., Graham, S. and Tuecke, S. (Eds) (2004), “Modeling stateful resources with web services”, Version 1.1, 3 May, white paper, available at: www‐128.ibm.com/developerworks/library/ws‐resource/ws‐modelingresources.pdf (accessed 4 May 2006).
5. Ioannidis, Y. (2005), “Digital libraries from the perspective of the DELOS Network of Excellence”, in Proceedings of the IEEE‐CS International Symposium: Global Data Interoperability – Challenges and Technologies, 20‐24 June, 2005, Sardinia, Italy, pp. 51‐5, available at: http://globalstor.org/ (accessed 4 May 2006).